Apparatus for drying materials in sacks or similar vessels.



H. P. DINESEN. APPARATUS FOR DRYING MATERIALS IN SACKS 0R SIMILAR VESSELS.

APPLICATION FILED OCT. 30. i911- 1,2371 Patented Oct. 29; 1918.

H. P. DINESEN.

APPARATUS FOR DRYING MATERIALS IN SACKS 0R SIMILAR VESSELS.

APPLICATION FILED OCT. 30. 19H. LQSQJWL Patented Oct. 29, 1918.

2 SHEETSSHEET 2.

5 I M y u 0 Zia 592M HANS PETER DINESEN, OF HERLQV, DENMARK.

APPARATUS FOR DRYING MATERIALS IN SACK$ 0R SIMILAR VESSELS.

To all whom z t may concern:

gand it consists therein that the sack containwith its contents into ing the material to be dried is. placed on a support consisting of a funnel-shaped frame, in the center of which is found an opening, closed by a grate, so thatthe sack rests partly upon the frame and partly upon the grate. v i

Theframe with the grate and the sack resting upon it forms a part of an air-shaft, and the goods in the sack. are dried by means of air which either is blown into the airshaft and afterward forced through the sack the free air, or which is made to flow from the free air down through the sack a suction being produced in the air-shaft.

Some modifications of the invention are illustrated in the accompanying drawing:

Figure 1 shows a drying apparatus by which the air is forced through the sack.

Fig. 2 shows a drying apparatus'by which the air is sucked through the sack.

Fig. 3 shows a horizontal frame with a grate and sack, partly in section.

Fig. 4 shows a frame with grate.

Fig. 5 shows an inclined frame with gratebars and sack, partly in section.

Fig. -6 shows a cross-section through a frame with grate-bars and a sack.

Fig. 7 shows a similar section as Fig. 6 but with the bearing-bars arranged in a lower position, suitable for a smaller sack.

Fig. 8 shows a cross-section through a frame with grate and sack.

Fig. 9 shows a similar section as Fig. 8 but with the grate range in a lower position suitable for a smaller sack.

Fig. 10 shows a bearing-bar.

In Fig. 1 is arranged a warming apparatus consisting of a fire-box 1, from which the smoke passes through tubes 2 with ribs and I a channel 3 to a chimney, which is not shown in the drawing.- The warmlngiapparatus is surrounded by achamber 4, which at one end has an air shaft 5 and in the interior is provided with several chambers or channels Specificationof Letters Patent.

, leads to an air-shaft 12,

into the tube 11 and the shaft 12;

15 is not quite saturated -]P'atented Qct. 29,1918.

Application filed October 30, 1917. Serial No. 199,297.

6, 7, 8'. From the chamber 8 a tube 9 leads to a blower 10, and from the latter a tube 11 upon which is arranged a frame 13 with a central opening in which is provided a grate 16, 17, which together with the frame 13 form a support for the sacks 15, containing the material to be dried. The drying apparatus may consist of an arbitrary number of shafts 12 and over each shaft may be placedan arbitrary num- ;ber of sacks.

The apparatus. works in the following manner :f Through the opening 5 is drawn free air which passes'through the chambers 6, 7, 8 and is heated by coming in contact with the tubes 2 and the fire-box" 1. From the chamber 4 the air is sucked through the tube 9 to the blower-10 and fromhere forced it passes then through thesacks 15 withthe material to be dried out in the free air. through the sacks with'the material to be dried the air yields part of its heat which is used to evaporate the moisture contained 1n the material to be dried, which moisture afterward is removed from the material to' be dried together with the air.

By passing In Fig. 2 the heating of the air takes place by means of steam or hot water, which through a tube 22 is supplied to a radiator 23 and passes away through a tube 24. The air passes in through an opening .25 and circulates around the radiator 23, where the air is heated and then passes on to a closed chamber 26, from where it by means of the blower 10 is sucked'away through the sacks 15,the shaft 12 and the tube 27 and thereafter is forced through the pipe 28 out in the free air.

If the air after having passed thesacks with moisture a portion of the already used air may again be sentythrough the warming apparatus.

In Fig. 3 is shown a cross section of the .shaft- 12 with a longitudinal section of the frame 13 and the grate 16, 17, which supports the sack 15, while'Fig. 1 shows a plan View of the frame and the grate. The frame 1 13 is funnel-shaped and is provided with blocks 14 which serve to fill out the corners and to form a goodand tight support for the sack so that no openings are produced between the sack and the frame, through which openings the air may flow away without passing through the'sack withthe material to be dried,

In this modification the sack rests not only on the frame 13, but also on adjustable grate 'bars 18 which can be arranged in different grooves 20, 21 in the bearing-bars 19 and thereby-as shown in Fig. 6f0rm a support for a big sack or-as shown in Fig. 7 where the bars are arranged in a lower positiona support for a small sack. The same result is obtained by the support for the sacks as shown in Figs. 8 and 9. In this case the grate however consists of bars arranged in two sets crosswise of each other and preferablyof cross bars 16 and longitudinal bars 17, which are arranged at different heights according to the size of the sack. The bars 16 can be firmly connected with the bars 17, and the position of the grate then can be altered by turning the same upside down. The bars 16 can also be firmly connected with each other and rest upon loose bars 17 which can be arranged in the holes 20 and 21. Each bar 17 or 18 can also be formed as bar 29 is shown in Fig. 10. The bar 29 is here provided with two Journals 30, which rest in grooves in the bearing-bars 19 (Figs. 3-9).

The two edges 31 and 32 of the bar 29 are of different height, so that the bars,

when they are placed withthe edge 31 upward, form a support for a big sack and when the edge 32 turns upward form a support for a smaller sack.

The grate which is formed by the bars 16 or 18 serves partly to prevent the sack from sliding lower down into the frame 13 gradually as the bulk of the drying goods is reduced by the drying, and partly to obexperience shows that the air is most inclined to flow through the sack in the immedlate nearness of the frame 13 as shown by the arrows in Figs. 6 and 8. The grate must therefore according to the nature of the material to be dried, be more or less elevated in the middle and lower at the edges. The rate can of course also be executed with tie bars 16 placed in the longitudinal direction of the sacks and with the bars 17, 18 and 29 placed cross-wise.

Having now particularly described and ascertained the nature of my said invention, I declare that what I claim is:

1. An apparatus of the character described comprising a support having openings therein, said support being adapted to receive sacks containing material which is to be dried, each of saidopenings having a grate or grate-bars and the said sacks adapted to rest over the said openings and on the said grates or grate bars, and means for causing a current of air through said grate support whereby the air. will pass through the sack with the materials to be dried as set forth.

2. In combination with a support having an opening, adapted to receive and be filled by a sack and a sack-supporting grate in said opening, means for causing a current of air to flow through said grate and sack to dry the contents of the latter.

3. In combination with a support having an opening and a saclesupporting grate in said opening, said grate being higher at the middle than at its outer edges, means for causing a current of air to flow through said grate and said sack. K

4-. In combination with a support having an opening and a sack-supporting grate in said opening, means for heating air and means for causing a current of the air thus heated to flow through said grate and sack.

5. In combination with a fire box' and an air chamber surrounding the same, an air pipe leading from said chamber, a fan supplied by said pipe, a support having openings and sack supporting grates and a pipe through which the heated air is driven by said fan-to said support below said grates for the purpose set forth.

' In testimonywhereof, I have signed my name to this specification in the presence of two subscribing witnesses.

'HANS PETER DINESEN. I

Witnesses:

MAGNUS YANSEN, MARTIN ZINN. 

